Commercial vehicle assembly inspection method and system

Abstract

The invention provides a commercial vehicle assembly inspection method and system, and the method comprises the steps: collecting a bolt assembly torque-rotation angle curve, a bolt ultrasonic echo signal and a tool vibration frequency through a preset distributed sensing unit based on an assembly station coordinate, and inputting the curves into a preset feature separation algorithm, a correlation mapping between the torque-rotation angle curve and the ultrasonic features is constructed through a preset feature separation algorithm, so that a corresponding full-period torque feature vector is generated; extracting a dynamic torque threshold interval adaptive to the current bolt characteristic from a preset assembly parameter database, and judging whether the bolt is normally assembled according to the dynamic torque threshold interval and the full-period torque characteristic vector; if not, process backtracking is carried out, and a torque deviation root is analyzed and positioned in combination with the fault tree; and generating a corresponding assembly parameter optimization instruction according to the torque deviation source, and feeding back the assembly parameter optimization instruction to an execution system so as to correspondingly complete normal assembly of the bolt. The inspection efficiency of the commercial vehicle can be effectively improved.

Images